--- old/src/cpu/aarch64/vm/templateInterpreter_aarch64.cpp 2015-12-03 14:02:19.070283072 -0500 +++ new/src/cpu/aarch64/vm/templateInterpreter_aarch64.cpp 2015-12-03 14:02:18.532343733 -0500 @@ -24,238 +24,12 @@ */ #include "precompiled.hpp" -#include "asm/macroAssembler.hpp" -#include "interpreter/bytecodeHistogram.hpp" #include "interpreter/interpreter.hpp" -#include "interpreter/interpreterGenerator.hpp" -#include "interpreter/interpreterRuntime.hpp" -#include "interpreter/interp_masm.hpp" -#include "interpreter/templateTable.hpp" -#include "interpreter/bytecodeTracer.hpp" -#include "oops/arrayOop.hpp" -#include "oops/methodData.hpp" +#include "oops/constMethod.hpp" #include "oops/method.hpp" -#include "oops/oop.inline.hpp" -#include "prims/jvmtiExport.hpp" -#include "prims/jvmtiThreadState.hpp" -#include "runtime/arguments.hpp" -#include "runtime/deoptimization.hpp" #include "runtime/frame.inline.hpp" -#include "runtime/sharedRuntime.hpp" -#include "runtime/stubRoutines.hpp" -#include "runtime/synchronizer.hpp" -#include "runtime/timer.hpp" -#include "runtime/vframeArray.hpp" #include "utilities/debug.hpp" -#include - -#ifndef PRODUCT -#include "oops/method.hpp" -#endif // !PRODUCT - -#ifdef BUILTIN_SIM -#include "../../../../../../simulator/simulator.hpp" -#endif - -#define __ _masm-> - -#ifndef CC_INTERP - -//----------------------------------------------------------------------------- - -extern "C" void entry(CodeBuffer*); - -//----------------------------------------------------------------------------- - -address TemplateInterpreterGenerator::generate_StackOverflowError_handler() { - address entry = __ pc(); - -#ifdef ASSERT - { - Label L; - __ ldr(rscratch1, Address(rfp, - frame::interpreter_frame_monitor_block_top_offset * - wordSize)); - __ mov(rscratch2, sp); - __ cmp(rscratch1, rscratch2); // maximal rsp for current rfp (stack - // grows negative) - __ br(Assembler::HS, L); // check if frame is complete - __ stop ("interpreter frame not set up"); - __ bind(L); - } -#endif // ASSERT - // Restore bcp under the assumption that the current frame is still - // interpreted - __ restore_bcp(); - - // expression stack must be empty before entering the VM if an - // exception happened - __ empty_expression_stack(); - // throw exception - __ call_VM(noreg, - CAST_FROM_FN_PTR(address, - InterpreterRuntime::throw_StackOverflowError)); - return entry; -} - -address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler( - const char* name) { - address entry = __ pc(); - // expression stack must be empty before entering the VM if an - // exception happened - __ empty_expression_stack(); - // setup parameters - // ??? convention: expect aberrant index in register r1 - __ movw(c_rarg2, r1); - __ mov(c_rarg1, (address)name); - __ call_VM(noreg, - CAST_FROM_FN_PTR(address, - InterpreterRuntime:: - throw_ArrayIndexOutOfBoundsException), - c_rarg1, c_rarg2); - return entry; -} - -address TemplateInterpreterGenerator::generate_ClassCastException_handler() { - address entry = __ pc(); - - // object is at TOS - __ pop(c_rarg1); - - // expression stack must be empty before entering the VM if an - // exception happened - __ empty_expression_stack(); - - __ call_VM(noreg, - CAST_FROM_FN_PTR(address, - InterpreterRuntime:: - throw_ClassCastException), - c_rarg1); - return entry; -} - -address TemplateInterpreterGenerator::generate_exception_handler_common( - const char* name, const char* message, bool pass_oop) { - assert(!pass_oop || message == NULL, "either oop or message but not both"); - address entry = __ pc(); - if (pass_oop) { - // object is at TOS - __ pop(c_rarg2); - } - // expression stack must be empty before entering the VM if an - // exception happened - __ empty_expression_stack(); - // setup parameters - __ lea(c_rarg1, Address((address)name)); - if (pass_oop) { - __ call_VM(r0, CAST_FROM_FN_PTR(address, - InterpreterRuntime:: - create_klass_exception), - c_rarg1, c_rarg2); - } else { - // kind of lame ExternalAddress can't take NULL because - // external_word_Relocation will assert. - if (message != NULL) { - __ lea(c_rarg2, Address((address)message)); - } else { - __ mov(c_rarg2, NULL_WORD); - } - __ call_VM(r0, - CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), - c_rarg1, c_rarg2); - } - // throw exception - __ b(address(Interpreter::throw_exception_entry())); - return entry; -} - -address TemplateInterpreterGenerator::generate_continuation_for(TosState state) { - address entry = __ pc(); - // NULL last_sp until next java call - __ str(zr, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize)); - __ dispatch_next(state); - return entry; -} - -address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step, size_t index_size) { - address entry = __ pc(); - - // Restore stack bottom in case i2c adjusted stack - __ ldr(esp, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize)); - // and NULL it as marker that esp is now tos until next java call - __ str(zr, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize)); - __ restore_bcp(); - __ restore_locals(); - __ restore_constant_pool_cache(); - __ get_method(rmethod); - - // Pop N words from the stack - __ get_cache_and_index_at_bcp(r1, r2, 1, index_size); - __ ldr(r1, Address(r1, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::flags_offset())); - __ andr(r1, r1, ConstantPoolCacheEntry::parameter_size_mask); - - __ add(esp, esp, r1, Assembler::LSL, 3); - - // Restore machine SP - __ ldr(rscratch1, Address(rmethod, Method::const_offset())); - __ ldrh(rscratch1, Address(rscratch1, ConstMethod::max_stack_offset())); - __ add(rscratch1, rscratch1, frame::interpreter_frame_monitor_size() + 2); - __ ldr(rscratch2, - Address(rfp, frame::interpreter_frame_initial_sp_offset * wordSize)); - __ sub(rscratch1, rscratch2, rscratch1, ext::uxtw, 3); - __ andr(sp, rscratch1, -16); - -#ifndef PRODUCT - // tell the simulator that the method has been reentered - if (NotifySimulator) { - __ notify(Assembler::method_reentry); - } -#endif - __ get_dispatch(); - __ dispatch_next(state, step); - - return entry; -} - -address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, - int step) { - address entry = __ pc(); - __ restore_bcp(); - __ restore_locals(); - __ restore_constant_pool_cache(); - __ get_method(rmethod); - - // handle exceptions - { - Label L; - __ ldr(rscratch1, Address(rthread, Thread::pending_exception_offset())); - __ cbz(rscratch1, L); - __ call_VM(noreg, - CAST_FROM_FN_PTR(address, - InterpreterRuntime::throw_pending_exception)); - __ should_not_reach_here(); - __ bind(L); - } - - __ get_dispatch(); - - // Calculate stack limit - __ ldr(rscratch1, Address(rmethod, Method::const_offset())); - __ ldrh(rscratch1, Address(rscratch1, ConstMethod::max_stack_offset())); - __ add(rscratch1, rscratch1, frame::interpreter_frame_monitor_size() + 2); - __ ldr(rscratch2, - Address(rfp, frame::interpreter_frame_initial_sp_offset * wordSize)); - __ sub(rscratch1, rscratch2, rscratch1, ext::uxtx, 3); - __ andr(sp, rscratch1, -16); - - // Restore expression stack pointer - __ ldr(esp, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize)); - // NULL last_sp until next java call - __ str(zr, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize)); - - __ dispatch_next(state, step); - return entry; -} +#include "utilities/macros.hpp" int AbstractInterpreter::BasicType_as_index(BasicType type) { @@ -279,1195 +53,6 @@ return i; } - -address TemplateInterpreterGenerator::generate_result_handler_for( - BasicType type) { - address entry = __ pc(); - switch (type) { - case T_BOOLEAN: __ uxtb(r0, r0); break; - case T_CHAR : __ uxth(r0, r0); break; - case T_BYTE : __ sxtb(r0, r0); break; - case T_SHORT : __ sxth(r0, r0); break; - case T_INT : __ uxtw(r0, r0); break; // FIXME: We almost certainly don't need this - case T_LONG : /* nothing to do */ break; - case T_VOID : /* nothing to do */ break; - case T_FLOAT : /* nothing to do */ break; - case T_DOUBLE : /* nothing to do */ break; - case T_OBJECT : - // retrieve result from frame - __ ldr(r0, Address(rfp, frame::interpreter_frame_oop_temp_offset*wordSize)); - // and verify it - __ verify_oop(r0); - break; - default : ShouldNotReachHere(); - } - __ ret(lr); // return from result handler - return entry; -} - -address TemplateInterpreterGenerator::generate_safept_entry_for( - TosState state, - address runtime_entry) { - address entry = __ pc(); - __ push(state); - __ call_VM(noreg, runtime_entry); - __ membar(Assembler::AnyAny); - __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos)); - return entry; -} - -// Helpers for commoning out cases in the various type of method entries. -// - - -// increment invocation count & check for overflow -// -// Note: checking for negative value instead of overflow -// so we have a 'sticky' overflow test -// -// rmethod: method -// -void InterpreterGenerator::generate_counter_incr( - Label* overflow, - Label* profile_method, - Label* profile_method_continue) { - Label done; - // Note: In tiered we increment either counters in Method* or in MDO depending if we're profiling or not. - if (TieredCompilation) { - int increment = InvocationCounter::count_increment; - Label no_mdo; - if (ProfileInterpreter) { - // Are we profiling? - __ ldr(r0, Address(rmethod, Method::method_data_offset())); - __ cbz(r0, no_mdo); - // Increment counter in the MDO - const Address mdo_invocation_counter(r0, in_bytes(MethodData::invocation_counter_offset()) + - in_bytes(InvocationCounter::counter_offset())); - const Address mask(r0, in_bytes(MethodData::invoke_mask_offset())); - __ increment_mask_and_jump(mdo_invocation_counter, increment, mask, rscratch1, rscratch2, false, Assembler::EQ, overflow); - __ b(done); - } - __ bind(no_mdo); - // Increment counter in MethodCounters - const Address invocation_counter(rscratch2, - MethodCounters::invocation_counter_offset() + - InvocationCounter::counter_offset()); - __ get_method_counters(rmethod, rscratch2, done); - const Address mask(rscratch2, in_bytes(MethodCounters::invoke_mask_offset())); - __ increment_mask_and_jump(invocation_counter, increment, mask, rscratch1, r1, false, Assembler::EQ, overflow); - __ bind(done); - } else { // not TieredCompilation - const Address backedge_counter(rscratch2, - MethodCounters::backedge_counter_offset() + - InvocationCounter::counter_offset()); - const Address invocation_counter(rscratch2, - MethodCounters::invocation_counter_offset() + - InvocationCounter::counter_offset()); - - __ get_method_counters(rmethod, rscratch2, done); - - if (ProfileInterpreter) { // %%% Merge this into MethodData* - __ ldrw(r1, Address(rscratch2, MethodCounters::interpreter_invocation_counter_offset())); - __ addw(r1, r1, 1); - __ strw(r1, Address(rscratch2, MethodCounters::interpreter_invocation_counter_offset())); - } - // Update standard invocation counters - __ ldrw(r1, invocation_counter); - __ ldrw(r0, backedge_counter); - - __ addw(r1, r1, InvocationCounter::count_increment); - __ andw(r0, r0, InvocationCounter::count_mask_value); - - __ strw(r1, invocation_counter); - __ addw(r0, r0, r1); // add both counters - - // profile_method is non-null only for interpreted method so - // profile_method != NULL == !native_call - - if (ProfileInterpreter && profile_method != NULL) { - // Test to see if we should create a method data oop - __ ldr(rscratch2, Address(rmethod, Method::method_counters_offset())); - __ ldrw(rscratch2, Address(rscratch2, in_bytes(MethodCounters::interpreter_profile_limit_offset()))); - __ cmpw(r0, rscratch2); - __ br(Assembler::LT, *profile_method_continue); - - // if no method data exists, go to profile_method - __ test_method_data_pointer(r0, *profile_method); - } - - { - __ ldr(rscratch2, Address(rmethod, Method::method_counters_offset())); - __ ldrw(rscratch2, Address(rscratch2, in_bytes(MethodCounters::interpreter_invocation_limit_offset()))); - __ cmpw(r0, rscratch2); - __ br(Assembler::HS, *overflow); - } - __ bind(done); - } -} - -void InterpreterGenerator::generate_counter_overflow(Label* do_continue) { - - // Asm interpreter on entry - // On return (i.e. jump to entry_point) [ back to invocation of interpreter ] - // Everything as it was on entry - - // InterpreterRuntime::frequency_counter_overflow takes two - // arguments, the first (thread) is passed by call_VM, the second - // indicates if the counter overflow occurs at a backwards branch - // (NULL bcp). We pass zero for it. The call returns the address - // of the verified entry point for the method or NULL if the - // compilation did not complete (either went background or bailed - // out). - __ mov(c_rarg1, 0); - __ call_VM(noreg, - CAST_FROM_FN_PTR(address, - InterpreterRuntime::frequency_counter_overflow), - c_rarg1); - - __ b(*do_continue); -} - -// See if we've got enough room on the stack for locals plus overhead. -// The expression stack grows down incrementally, so the normal guard -// page mechanism will work for that. -// -// NOTE: Since the additional locals are also always pushed (wasn't -// obvious in generate_method_entry) so the guard should work for them -// too. -// -// Args: -// r3: number of additional locals this frame needs (what we must check) -// rmethod: Method* -// -// Kills: -// r0 -void InterpreterGenerator::generate_stack_overflow_check(void) { - - // monitor entry size: see picture of stack set - // (generate_method_entry) and frame_amd64.hpp - const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; - - // total overhead size: entry_size + (saved rbp through expr stack - // bottom). be sure to change this if you add/subtract anything - // to/from the overhead area - const int overhead_size = - -(frame::interpreter_frame_initial_sp_offset * wordSize) + entry_size; - - const int page_size = os::vm_page_size(); - - Label after_frame_check; - - // see if the frame is greater than one page in size. If so, - // then we need to verify there is enough stack space remaining - // for the additional locals. - // - // Note that we use SUBS rather than CMP here because the immediate - // field of this instruction may overflow. SUBS can cope with this - // because it is a macro that will expand to some number of MOV - // instructions and a register operation. - __ subs(rscratch1, r3, (page_size - overhead_size) / Interpreter::stackElementSize); - __ br(Assembler::LS, after_frame_check); - - // compute rsp as if this were going to be the last frame on - // the stack before the red zone - - const Address stack_base(rthread, Thread::stack_base_offset()); - const Address stack_size(rthread, Thread::stack_size_offset()); - - // locals + overhead, in bytes - __ mov(r0, overhead_size); - __ add(r0, r0, r3, Assembler::LSL, Interpreter::logStackElementSize); // 2 slots per parameter. - - __ ldr(rscratch1, stack_base); - __ ldr(rscratch2, stack_size); - -#ifdef ASSERT - Label stack_base_okay, stack_size_okay; - // verify that thread stack base is non-zero - __ cbnz(rscratch1, stack_base_okay); - __ stop("stack base is zero"); - __ bind(stack_base_okay); - // verify that thread stack size is non-zero - __ cbnz(rscratch2, stack_size_okay); - __ stop("stack size is zero"); - __ bind(stack_size_okay); -#endif - - // Add stack base to locals and subtract stack size - __ sub(rscratch1, rscratch1, rscratch2); // Stack limit - __ add(r0, r0, rscratch1); - - // Use the maximum number of pages we might bang. - const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages : - (StackRedPages+StackYellowPages); - - // add in the red and yellow zone sizes - __ add(r0, r0, max_pages * page_size * 2); - - // check against the current stack bottom - __ cmp(sp, r0); - __ br(Assembler::HI, after_frame_check); - - // Remove the incoming args, peeling the machine SP back to where it - // was in the caller. This is not strictly necessary, but unless we - // do so the stack frame may have a garbage FP; this ensures a - // correct call stack that we can always unwind. The ANDR should be - // unnecessary because the sender SP in r13 is always aligned, but - // it doesn't hurt. - __ andr(sp, r13, -16); - - // Note: the restored frame is not necessarily interpreted. - // Use the shared runtime version of the StackOverflowError. - assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "stub not yet generated"); - __ far_jump(RuntimeAddress(StubRoutines::throw_StackOverflowError_entry())); - - // all done with frame size check - __ bind(after_frame_check); -} - -// Allocate monitor and lock method (asm interpreter) -// -// Args: -// rmethod: Method* -// rlocals: locals -// -// Kills: -// r0 -// c_rarg0, c_rarg1, c_rarg2, c_rarg3, ...(param regs) -// rscratch1, rscratch2 (scratch regs) -void TemplateInterpreterGenerator::lock_method() { - // synchronize method - const Address access_flags(rmethod, Method::access_flags_offset()); - const Address monitor_block_top( - rfp, - frame::interpreter_frame_monitor_block_top_offset * wordSize); - const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; - -#ifdef ASSERT - { - Label L; - __ ldrw(r0, access_flags); - __ tst(r0, JVM_ACC_SYNCHRONIZED); - __ br(Assembler::NE, L); - __ stop("method doesn't need synchronization"); - __ bind(L); - } -#endif // ASSERT - - // get synchronization object - { - const int mirror_offset = in_bytes(Klass::java_mirror_offset()); - Label done; - __ ldrw(r0, access_flags); - __ tst(r0, JVM_ACC_STATIC); - // get receiver (assume this is frequent case) - __ ldr(r0, Address(rlocals, Interpreter::local_offset_in_bytes(0))); - __ br(Assembler::EQ, done); - __ ldr(r0, Address(rmethod, Method::const_offset())); - __ ldr(r0, Address(r0, ConstMethod::constants_offset())); - __ ldr(r0, Address(r0, - ConstantPool::pool_holder_offset_in_bytes())); - __ ldr(r0, Address(r0, mirror_offset)); - -#ifdef ASSERT - { - Label L; - __ cbnz(r0, L); - __ stop("synchronization object is NULL"); - __ bind(L); - } -#endif // ASSERT - - __ bind(done); - } - - // add space for monitor & lock - __ sub(sp, sp, entry_size); // add space for a monitor entry - __ sub(esp, esp, entry_size); - __ mov(rscratch1, esp); - __ str(rscratch1, monitor_block_top); // set new monitor block top - // store object - __ str(r0, Address(esp, BasicObjectLock::obj_offset_in_bytes())); - __ mov(c_rarg1, esp); // object address - __ lock_object(c_rarg1); -} - -// Generate a fixed interpreter frame. This is identical setup for -// interpreted methods and for native methods hence the shared code. -// -// Args: -// lr: return address -// rmethod: Method* -// rlocals: pointer to locals -// rcpool: cp cache -// stack_pointer: previous sp -void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) { - // initialize fixed part of activation frame - if (native_call) { - __ sub(esp, sp, 12 * wordSize); - __ mov(rbcp, zr); - __ stp(esp, zr, Address(__ pre(sp, -12 * wordSize))); - // add 2 zero-initialized slots for native calls - __ stp(zr, zr, Address(sp, 10 * wordSize)); - } else { - __ sub(esp, sp, 10 * wordSize); - __ ldr(rscratch1, Address(rmethod, Method::const_offset())); // get ConstMethod - __ add(rbcp, rscratch1, in_bytes(ConstMethod::codes_offset())); // get codebase - __ stp(esp, rbcp, Address(__ pre(sp, -10 * wordSize))); - } - - if (ProfileInterpreter) { - Label method_data_continue; - __ ldr(rscratch1, Address(rmethod, Method::method_data_offset())); - __ cbz(rscratch1, method_data_continue); - __ lea(rscratch1, Address(rscratch1, in_bytes(MethodData::data_offset()))); - __ bind(method_data_continue); - __ stp(rscratch1, rmethod, Address(sp, 4 * wordSize)); // save Method* and mdp (method data pointer) - } else { - __ stp(zr, rmethod, Address(sp, 4 * wordSize)); // save Method* (no mdp) - } - - __ ldr(rcpool, Address(rmethod, Method::const_offset())); - __ ldr(rcpool, Address(rcpool, ConstMethod::constants_offset())); - __ ldr(rcpool, Address(rcpool, ConstantPool::cache_offset_in_bytes())); - __ stp(rlocals, rcpool, Address(sp, 2 * wordSize)); - - __ stp(rfp, lr, Address(sp, 8 * wordSize)); - __ lea(rfp, Address(sp, 8 * wordSize)); - - // set sender sp - // leave last_sp as null - __ stp(zr, r13, Address(sp, 6 * wordSize)); - - // Move SP out of the way - if (! native_call) { - __ ldr(rscratch1, Address(rmethod, Method::const_offset())); - __ ldrh(rscratch1, Address(rscratch1, ConstMethod::max_stack_offset())); - __ add(rscratch1, rscratch1, frame::interpreter_frame_monitor_size() + 2); - __ sub(rscratch1, sp, rscratch1, ext::uxtw, 3); - __ andr(sp, rscratch1, -16); - } -} - -// End of helpers - -// Various method entries -//------------------------------------------------------------------------------------------------------------------------ -// -// - -// Method entry for java.lang.ref.Reference.get. -address InterpreterGenerator::generate_Reference_get_entry(void) { -#if INCLUDE_ALL_GCS - // Code: _aload_0, _getfield, _areturn - // parameter size = 1 - // - // The code that gets generated by this routine is split into 2 parts: - // 1. The "intrinsified" code for G1 (or any SATB based GC), - // 2. The slow path - which is an expansion of the regular method entry. - // - // Notes:- - // * In the G1 code we do not check whether we need to block for - // a safepoint. If G1 is enabled then we must execute the specialized - // code for Reference.get (except when the Reference object is null) - // so that we can log the value in the referent field with an SATB - // update buffer. - // If the code for the getfield template is modified so that the - // G1 pre-barrier code is executed when the current method is - // Reference.get() then going through the normal method entry - // will be fine. - // * The G1 code can, however, check the receiver object (the instance - // of java.lang.Reference) and jump to the slow path if null. If the - // Reference object is null then we obviously cannot fetch the referent - // and so we don't need to call the G1 pre-barrier. Thus we can use the - // regular method entry code to generate the NPE. - // - // This code is based on generate_accessor_enty. - // - // rmethod: Method* - // r13: senderSP must preserve for slow path, set SP to it on fast path - - address entry = __ pc(); - - const int referent_offset = java_lang_ref_Reference::referent_offset; - guarantee(referent_offset > 0, "referent offset not initialized"); - - if (UseG1GC) { - Label slow_path; - const Register local_0 = c_rarg0; - // Check if local 0 != NULL - // If the receiver is null then it is OK to jump to the slow path. - __ ldr(local_0, Address(esp, 0)); - __ cbz(local_0, slow_path); - - - // Load the value of the referent field. - const Address field_address(local_0, referent_offset); - __ load_heap_oop(local_0, field_address); - - // Generate the G1 pre-barrier code to log the value of - // the referent field in an SATB buffer. - __ enter(); // g1_write may call runtime - __ g1_write_barrier_pre(noreg /* obj */, - local_0 /* pre_val */, - rthread /* thread */, - rscratch2 /* tmp */, - true /* tosca_live */, - true /* expand_call */); - __ leave(); - // areturn - __ andr(sp, r13, -16); // done with stack - __ ret(lr); - - // generate a vanilla interpreter entry as the slow path - __ bind(slow_path); - __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::zerolocals)); - return entry; - } -#endif // INCLUDE_ALL_GCS - - // If G1 is not enabled then attempt to go through the accessor entry point - // Reference.get is an accessor - return generate_accessor_entry(); -} - -/** - * Method entry for static native methods: - * int java.util.zip.CRC32.update(int crc, int b) - */ -address InterpreterGenerator::generate_CRC32_update_entry() { - if (UseCRC32Intrinsics) { - address entry = __ pc(); - - // rmethod: Method* - // r13: senderSP must preserved for slow path - // esp: args - - Label slow_path; - // If we need a safepoint check, generate full interpreter entry. - ExternalAddress state(SafepointSynchronize::address_of_state()); - unsigned long offset; - __ adrp(rscratch1, ExternalAddress(SafepointSynchronize::address_of_state()), offset); - __ ldrw(rscratch1, Address(rscratch1, offset)); - assert(SafepointSynchronize::_not_synchronized == 0, "rewrite this code"); - __ cbnz(rscratch1, slow_path); - - // We don't generate local frame and don't align stack because - // we call stub code and there is no safepoint on this path. - - // Load parameters - const Register crc = c_rarg0; // crc - const Register val = c_rarg1; // source java byte value - const Register tbl = c_rarg2; // scratch - - // Arguments are reversed on java expression stack - __ ldrw(val, Address(esp, 0)); // byte value - __ ldrw(crc, Address(esp, wordSize)); // Initial CRC - - __ adrp(tbl, ExternalAddress(StubRoutines::crc_table_addr()), offset); - __ add(tbl, tbl, offset); - - __ ornw(crc, zr, crc); // ~crc - __ update_byte_crc32(crc, val, tbl); - __ ornw(crc, zr, crc); // ~crc - - // result in c_rarg0 - - __ andr(sp, r13, -16); - __ ret(lr); - - // generate a vanilla native entry as the slow path - __ bind(slow_path); - __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::native)); - return entry; - } - return NULL; -} - -/** - * Method entry for static native methods: - * int java.util.zip.CRC32.updateBytes(int crc, byte[] b, int off, int len) - * int java.util.zip.CRC32.updateByteBuffer(int crc, long buf, int off, int len) - */ -address InterpreterGenerator::generate_CRC32_updateBytes_entry(AbstractInterpreter::MethodKind kind) { - if (UseCRC32Intrinsics) { - address entry = __ pc(); - - // rmethod,: Method* - // r13: senderSP must preserved for slow path - - Label slow_path; - // If we need a safepoint check, generate full interpreter entry. - ExternalAddress state(SafepointSynchronize::address_of_state()); - unsigned long offset; - __ adrp(rscratch1, ExternalAddress(SafepointSynchronize::address_of_state()), offset); - __ ldrw(rscratch1, Address(rscratch1, offset)); - assert(SafepointSynchronize::_not_synchronized == 0, "rewrite this code"); - __ cbnz(rscratch1, slow_path); - - // We don't generate local frame and don't align stack because - // we call stub code and there is no safepoint on this path. - - // Load parameters - const Register crc = c_rarg0; // crc - const Register buf = c_rarg1; // source java byte array address - const Register len = c_rarg2; // length - const Register off = len; // offset (never overlaps with 'len') - - // Arguments are reversed on java expression stack - // Calculate address of start element - if (kind == Interpreter::java_util_zip_CRC32_updateByteBuffer) { - __ ldr(buf, Address(esp, 2*wordSize)); // long buf - __ ldrw(off, Address(esp, wordSize)); // offset - __ add(buf, buf, off); // + offset - __ ldrw(crc, Address(esp, 4*wordSize)); // Initial CRC - } else { - __ ldr(buf, Address(esp, 2*wordSize)); // byte[] array - __ add(buf, buf, arrayOopDesc::base_offset_in_bytes(T_BYTE)); // + header size - __ ldrw(off, Address(esp, wordSize)); // offset - __ add(buf, buf, off); // + offset - __ ldrw(crc, Address(esp, 3*wordSize)); // Initial CRC - } - // Can now load 'len' since we're finished with 'off' - __ ldrw(len, Address(esp, 0x0)); // Length - - __ andr(sp, r13, -16); // Restore the caller's SP - - // We are frameless so we can just jump to the stub. - __ b(CAST_FROM_FN_PTR(address, StubRoutines::updateBytesCRC32())); - - // generate a vanilla native entry as the slow path - __ bind(slow_path); - __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::native)); - return entry; - } - return NULL; -} - -void InterpreterGenerator::bang_stack_shadow_pages(bool native_call) { - // Bang each page in the shadow zone. We can't assume it's been done for - // an interpreter frame with greater than a page of locals, so each page - // needs to be checked. Only true for non-native. - if (UseStackBanging) { - const int start_page = native_call ? StackShadowPages : 1; - const int page_size = os::vm_page_size(); - for (int pages = start_page; pages <= StackShadowPages ; pages++) { - __ sub(rscratch2, sp, pages*page_size); - __ str(zr, Address(rscratch2)); - } - } -} - - -// Interpreter stub for calling a native method. (asm interpreter) -// This sets up a somewhat different looking stack for calling the -// native method than the typical interpreter frame setup. -address InterpreterGenerator::generate_native_entry(bool synchronized) { - // determine code generation flags - bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods; - - // r1: Method* - // rscratch1: sender sp - - address entry_point = __ pc(); - - const Address constMethod (rmethod, Method::const_offset()); - const Address access_flags (rmethod, Method::access_flags_offset()); - const Address size_of_parameters(r2, ConstMethod:: - size_of_parameters_offset()); - - // get parameter size (always needed) - __ ldr(r2, constMethod); - __ load_unsigned_short(r2, size_of_parameters); - - // native calls don't need the stack size check since they have no - // expression stack and the arguments are already on the stack and - // we only add a handful of words to the stack - - // rmethod: Method* - // r2: size of parameters - // rscratch1: sender sp - - // for natives the size of locals is zero - - // compute beginning of parameters (rlocals) - __ add(rlocals, esp, r2, ext::uxtx, 3); - __ add(rlocals, rlocals, -wordSize); - - // Pull SP back to minimum size: this avoids holes in the stack - __ andr(sp, esp, -16); - - // initialize fixed part of activation frame - generate_fixed_frame(true); -#ifndef PRODUCT - // tell the simulator that a method has been entered - if (NotifySimulator) { - __ notify(Assembler::method_entry); - } -#endif - - // make sure method is native & not abstract -#ifdef ASSERT - __ ldrw(r0, access_flags); - { - Label L; - __ tst(r0, JVM_ACC_NATIVE); - __ br(Assembler::NE, L); - __ stop("tried to execute non-native method as native"); - __ bind(L); - } - { - Label L; - __ tst(r0, JVM_ACC_ABSTRACT); - __ br(Assembler::EQ, L); - __ stop("tried to execute abstract method in interpreter"); - __ bind(L); - } -#endif - - // Since at this point in the method invocation the exception - // handler would try to exit the monitor of synchronized methods - // which hasn't been entered yet, we set the thread local variable - // _do_not_unlock_if_synchronized to true. The remove_activation - // will check this flag. - - const Address do_not_unlock_if_synchronized(rthread, - in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); - __ mov(rscratch2, true); - __ strb(rscratch2, do_not_unlock_if_synchronized); - - // increment invocation count & check for overflow - Label invocation_counter_overflow; - if (inc_counter) { - generate_counter_incr(&invocation_counter_overflow, NULL, NULL); - } - - Label continue_after_compile; - __ bind(continue_after_compile); - - bang_stack_shadow_pages(true); - - // reset the _do_not_unlock_if_synchronized flag - __ strb(zr, do_not_unlock_if_synchronized); - - // check for synchronized methods - // Must happen AFTER invocation_counter check and stack overflow check, - // so method is not locked if overflows. - if (synchronized) { - lock_method(); - } else { - // no synchronization necessary -#ifdef ASSERT - { - Label L; - __ ldrw(r0, access_flags); - __ tst(r0, JVM_ACC_SYNCHRONIZED); - __ br(Assembler::EQ, L); - __ stop("method needs synchronization"); - __ bind(L); - } -#endif - } - - // start execution -#ifdef ASSERT - { - Label L; - const Address monitor_block_top(rfp, - frame::interpreter_frame_monitor_block_top_offset * wordSize); - __ ldr(rscratch1, monitor_block_top); - __ cmp(esp, rscratch1); - __ br(Assembler::EQ, L); - __ stop("broken stack frame setup in interpreter"); - __ bind(L); - } -#endif - - // jvmti support - __ notify_method_entry(); - - // work registers - const Register t = r17; - const Register result_handler = r19; - - // allocate space for parameters - __ ldr(t, Address(rmethod, Method::const_offset())); - __ load_unsigned_short(t, Address(t, ConstMethod::size_of_parameters_offset())); - - __ sub(rscratch1, esp, t, ext::uxtx, Interpreter::logStackElementSize); - __ andr(sp, rscratch1, -16); - __ mov(esp, rscratch1); - - // get signature handler - { - Label L; - __ ldr(t, Address(rmethod, Method::signature_handler_offset())); - __ cbnz(t, L); - __ call_VM(noreg, - CAST_FROM_FN_PTR(address, - InterpreterRuntime::prepare_native_call), - rmethod); - __ ldr(t, Address(rmethod, Method::signature_handler_offset())); - __ bind(L); - } - - // call signature handler - assert(InterpreterRuntime::SignatureHandlerGenerator::from() == rlocals, - "adjust this code"); - assert(InterpreterRuntime::SignatureHandlerGenerator::to() == sp, - "adjust this code"); - assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == rscratch1, - "adjust this code"); - - // The generated handlers do not touch rmethod (the method). - // However, large signatures cannot be cached and are generated - // each time here. The slow-path generator can do a GC on return, - // so we must reload it after the call. - __ blr(t); - __ get_method(rmethod); // slow path can do a GC, reload rmethod - - - // result handler is in r0 - // set result handler - __ mov(result_handler, r0); - // pass mirror handle if static call - { - Label L; - const int mirror_offset = in_bytes(Klass::java_mirror_offset()); - __ ldrw(t, Address(rmethod, Method::access_flags_offset())); - __ tst(t, JVM_ACC_STATIC); - __ br(Assembler::EQ, L); - // get mirror - __ ldr(t, Address(rmethod, Method::const_offset())); - __ ldr(t, Address(t, ConstMethod::constants_offset())); - __ ldr(t, Address(t, ConstantPool::pool_holder_offset_in_bytes())); - __ ldr(t, Address(t, mirror_offset)); - // copy mirror into activation frame - __ str(t, Address(rfp, frame::interpreter_frame_oop_temp_offset * wordSize)); - // pass handle to mirror - __ add(c_rarg1, rfp, frame::interpreter_frame_oop_temp_offset * wordSize); - __ bind(L); - } - - // get native function entry point in r10 - { - Label L; - __ ldr(r10, Address(rmethod, Method::native_function_offset())); - address unsatisfied = (SharedRuntime::native_method_throw_unsatisfied_link_error_entry()); - __ mov(rscratch2, unsatisfied); - __ ldr(rscratch2, rscratch2); - __ cmp(r10, rscratch2); - __ br(Assembler::NE, L); - __ call_VM(noreg, - CAST_FROM_FN_PTR(address, - InterpreterRuntime::prepare_native_call), - rmethod); - __ get_method(rmethod); - __ ldr(r10, Address(rmethod, Method::native_function_offset())); - __ bind(L); - } - - // pass JNIEnv - __ add(c_rarg0, rthread, in_bytes(JavaThread::jni_environment_offset())); - - // It is enough that the pc() points into the right code - // segment. It does not have to be the correct return pc. - __ set_last_Java_frame(esp, rfp, (address)NULL, rscratch1); - - // change thread state -#ifdef ASSERT - { - Label L; - __ ldrw(t, Address(rthread, JavaThread::thread_state_offset())); - __ cmp(t, _thread_in_Java); - __ br(Assembler::EQ, L); - __ stop("Wrong thread state in native stub"); - __ bind(L); - } -#endif - - // Change state to native - __ mov(rscratch1, _thread_in_native); - __ lea(rscratch2, Address(rthread, JavaThread::thread_state_offset())); - __ stlrw(rscratch1, rscratch2); - - // Call the native method. - __ blrt(r10, rscratch1); - __ maybe_isb(); - __ get_method(rmethod); - // result potentially in r0 or v0 - - // make room for the pushes we're about to do - __ sub(rscratch1, esp, 4 * wordSize); - __ andr(sp, rscratch1, -16); - - // NOTE: The order of these pushes is known to frame::interpreter_frame_result - // in order to extract the result of a method call. If the order of these - // pushes change or anything else is added to the stack then the code in - // interpreter_frame_result must also change. - __ push(dtos); - __ push(ltos); - - // change thread state - __ mov(rscratch1, _thread_in_native_trans); - __ lea(rscratch2, Address(rthread, JavaThread::thread_state_offset())); - __ stlrw(rscratch1, rscratch2); - - if (os::is_MP()) { - if (UseMembar) { - // Force this write out before the read below - __ dsb(Assembler::SY); - } else { - // Write serialization page so VM thread can do a pseudo remote membar. - // We use the current thread pointer to calculate a thread specific - // offset to write to within the page. This minimizes bus traffic - // due to cache line collision. - __ serialize_memory(rthread, rscratch2); - } - } - - // check for safepoint operation in progress and/or pending suspend requests - { - Label Continue; - { - unsigned long offset; - __ adrp(rscratch2, SafepointSynchronize::address_of_state(), offset); - __ ldrw(rscratch2, Address(rscratch2, offset)); - } - assert(SafepointSynchronize::_not_synchronized == 0, - "SafepointSynchronize::_not_synchronized"); - Label L; - __ cbnz(rscratch2, L); - __ ldrw(rscratch2, Address(rthread, JavaThread::suspend_flags_offset())); - __ cbz(rscratch2, Continue); - __ bind(L); - - // Don't use call_VM as it will see a possible pending exception - // and forward it and never return here preventing us from - // clearing _last_native_pc down below. So we do a runtime call by - // hand. - // - __ mov(c_rarg0, rthread); - __ mov(rscratch2, CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans)); - __ blrt(rscratch2, 1, 0, 0); - __ maybe_isb(); - __ get_method(rmethod); - __ reinit_heapbase(); - __ bind(Continue); - } - - // change thread state - __ mov(rscratch1, _thread_in_Java); - __ lea(rscratch2, Address(rthread, JavaThread::thread_state_offset())); - __ stlrw(rscratch1, rscratch2); - - // reset_last_Java_frame - __ reset_last_Java_frame(true, true); - - // reset handle block - __ ldr(t, Address(rthread, JavaThread::active_handles_offset())); - __ str(zr, Address(t, JNIHandleBlock::top_offset_in_bytes())); - - // If result is an oop unbox and store it in frame where gc will see it - // and result handler will pick it up - - { - Label no_oop, store_result; - __ adr(t, ExternalAddress(AbstractInterpreter::result_handler(T_OBJECT))); - __ cmp(t, result_handler); - __ br(Assembler::NE, no_oop); - // retrieve result - __ pop(ltos); - __ cbz(r0, store_result); - __ ldr(r0, Address(r0, 0)); - __ bind(store_result); - __ str(r0, Address(rfp, frame::interpreter_frame_oop_temp_offset*wordSize)); - // keep stack depth as expected by pushing oop which will eventually be discarded - __ push(ltos); - __ bind(no_oop); - } - - { - Label no_reguard; - __ lea(rscratch1, Address(rthread, in_bytes(JavaThread::stack_guard_state_offset()))); - __ ldrb(rscratch1, Address(rscratch1)); - __ cmp(rscratch1, JavaThread::stack_guard_yellow_disabled); - __ br(Assembler::NE, no_reguard); - - __ pusha(); // XXX only save smashed registers - __ mov(c_rarg0, rthread); - __ mov(rscratch2, CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages)); - __ blrt(rscratch2, 0, 0, 0); - __ popa(); // XXX only restore smashed registers - __ bind(no_reguard); - } - - // The method register is junk from after the thread_in_native transition - // until here. Also can't call_VM until the bcp has been - // restored. Need bcp for throwing exception below so get it now. - __ get_method(rmethod); - - // restore bcp to have legal interpreter frame, i.e., bci == 0 <=> - // rbcp == code_base() - __ ldr(rbcp, Address(rmethod, Method::const_offset())); // get ConstMethod* - __ add(rbcp, rbcp, in_bytes(ConstMethod::codes_offset())); // get codebase - // handle exceptions (exception handling will handle unlocking!) - { - Label L; - __ ldr(rscratch1, Address(rthread, Thread::pending_exception_offset())); - __ cbz(rscratch1, L); - // Note: At some point we may want to unify this with the code - // used in call_VM_base(); i.e., we should use the - // StubRoutines::forward_exception code. For now this doesn't work - // here because the rsp is not correctly set at this point. - __ MacroAssembler::call_VM(noreg, - CAST_FROM_FN_PTR(address, - InterpreterRuntime::throw_pending_exception)); - __ should_not_reach_here(); - __ bind(L); - } - - // do unlocking if necessary - { - Label L; - __ ldrw(t, Address(rmethod, Method::access_flags_offset())); - __ tst(t, JVM_ACC_SYNCHRONIZED); - __ br(Assembler::EQ, L); - // the code below should be shared with interpreter macro - // assembler implementation - { - Label unlock; - // BasicObjectLock will be first in list, since this is a - // synchronized method. However, need to check that the object - // has not been unlocked by an explicit monitorexit bytecode. - - // monitor expect in c_rarg1 for slow unlock path - __ lea (c_rarg1, Address(rfp, // address of first monitor - (intptr_t)(frame::interpreter_frame_initial_sp_offset * - wordSize - sizeof(BasicObjectLock)))); - - __ ldr(t, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes())); - __ cbnz(t, unlock); - - // Entry already unlocked, need to throw exception - __ MacroAssembler::call_VM(noreg, - CAST_FROM_FN_PTR(address, - InterpreterRuntime::throw_illegal_monitor_state_exception)); - __ should_not_reach_here(); - - __ bind(unlock); - __ unlock_object(c_rarg1); - } - __ bind(L); - } - - // jvmti support - // Note: This must happen _after_ handling/throwing any exceptions since - // the exception handler code notifies the runtime of method exits - // too. If this happens before, method entry/exit notifications are - // not properly paired (was bug - gri 11/22/99). - __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI); - - // restore potential result in r0:d0, call result handler to - // restore potential result in ST0 & handle result - - __ pop(ltos); - __ pop(dtos); - - __ blr(result_handler); - - // remove activation - __ ldr(esp, Address(rfp, - frame::interpreter_frame_sender_sp_offset * - wordSize)); // get sender sp - // remove frame anchor - __ leave(); - - // resture sender sp - __ mov(sp, esp); - - __ ret(lr); - - if (inc_counter) { - // Handle overflow of counter and compile method - __ bind(invocation_counter_overflow); - generate_counter_overflow(&continue_after_compile); - } - - return entry_point; -} - -// -// Generic interpreted method entry to (asm) interpreter -// -address InterpreterGenerator::generate_normal_entry(bool synchronized) { - // determine code generation flags - bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods; - - // rscratch1: sender sp - address entry_point = __ pc(); - - const Address constMethod(rmethod, Method::const_offset()); - const Address access_flags(rmethod, Method::access_flags_offset()); - const Address size_of_parameters(r3, - ConstMethod::size_of_parameters_offset()); - const Address size_of_locals(r3, ConstMethod::size_of_locals_offset()); - - // get parameter size (always needed) - // need to load the const method first - __ ldr(r3, constMethod); - __ load_unsigned_short(r2, size_of_parameters); - - // r2: size of parameters - - __ load_unsigned_short(r3, size_of_locals); // get size of locals in words - __ sub(r3, r3, r2); // r3 = no. of additional locals - - // see if we've got enough room on the stack for locals plus overhead. - generate_stack_overflow_check(); - - // compute beginning of parameters (rlocals) - __ add(rlocals, esp, r2, ext::uxtx, 3); - __ sub(rlocals, rlocals, wordSize); - - // Make room for locals - __ sub(rscratch1, esp, r3, ext::uxtx, 3); - __ andr(sp, rscratch1, -16); - - // r3 - # of additional locals - // allocate space for locals - // explicitly initialize locals - { - Label exit, loop; - __ ands(zr, r3, r3); - __ br(Assembler::LE, exit); // do nothing if r3 <= 0 - __ bind(loop); - __ str(zr, Address(__ post(rscratch1, wordSize))); - __ sub(r3, r3, 1); // until everything initialized - __ cbnz(r3, loop); - __ bind(exit); - } - - // And the base dispatch table - __ get_dispatch(); - - // initialize fixed part of activation frame - generate_fixed_frame(false); -#ifndef PRODUCT - // tell the simulator that a method has been entered - if (NotifySimulator) { - __ notify(Assembler::method_entry); - } -#endif - // make sure method is not native & not abstract -#ifdef ASSERT - __ ldrw(r0, access_flags); - { - Label L; - __ tst(r0, JVM_ACC_NATIVE); - __ br(Assembler::EQ, L); - __ stop("tried to execute native method as non-native"); - __ bind(L); - } - { - Label L; - __ tst(r0, JVM_ACC_ABSTRACT); - __ br(Assembler::EQ, L); - __ stop("tried to execute abstract method in interpreter"); - __ bind(L); - } -#endif - - // Since at this point in the method invocation the exception - // handler would try to exit the monitor of synchronized methods - // which hasn't been entered yet, we set the thread local variable - // _do_not_unlock_if_synchronized to true. The remove_activation - // will check this flag. - - const Address do_not_unlock_if_synchronized(rthread, - in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); - __ mov(rscratch2, true); - __ strb(rscratch2, do_not_unlock_if_synchronized); - - // increment invocation count & check for overflow - Label invocation_counter_overflow; - Label profile_method; - Label profile_method_continue; - if (inc_counter) { - generate_counter_incr(&invocation_counter_overflow, - &profile_method, - &profile_method_continue); - if (ProfileInterpreter) { - __ bind(profile_method_continue); - } - } - - Label continue_after_compile; - __ bind(continue_after_compile); - - bang_stack_shadow_pages(false); - - // reset the _do_not_unlock_if_synchronized flag - __ strb(zr, do_not_unlock_if_synchronized); - - // check for synchronized methods - // Must happen AFTER invocation_counter check and stack overflow check, - // so method is not locked if overflows. - if (synchronized) { - // Allocate monitor and lock method - lock_method(); - } else { - // no synchronization necessary -#ifdef ASSERT - { - Label L; - __ ldrw(r0, access_flags); - __ tst(r0, JVM_ACC_SYNCHRONIZED); - __ br(Assembler::EQ, L); - __ stop("method needs synchronization"); - __ bind(L); - } -#endif - } - - // start execution -#ifdef ASSERT - { - Label L; - const Address monitor_block_top (rfp, - frame::interpreter_frame_monitor_block_top_offset * wordSize); - __ ldr(rscratch1, monitor_block_top); - __ cmp(esp, rscratch1); - __ br(Assembler::EQ, L); - __ stop("broken stack frame setup in interpreter"); - __ bind(L); - } -#endif - - // jvmti support - __ notify_method_entry(); - - __ dispatch_next(vtos); - - // invocation counter overflow - if (inc_counter) { - if (ProfileInterpreter) { - // We have decided to profile this method in the interpreter - __ bind(profile_method); - __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); - __ set_method_data_pointer_for_bcp(); - // don't think we need this - __ get_method(r1); - __ b(profile_method_continue); - } - // Handle overflow of counter and compile method - __ bind(invocation_counter_overflow); - generate_counter_overflow(&continue_after_compile); - } - - return entry_point; -} - // These should never be compiled since the interpreter will prefer // the compiled version to the intrinsic version. bool AbstractInterpreter::can_be_compiled(methodHandle m) { @@ -1593,483 +178,3 @@ *interpreter_frame->interpreter_frame_cache_addr() = method->constants()->cache(); } - - -//----------------------------------------------------------------------------- -// Exceptions - -void TemplateInterpreterGenerator::generate_throw_exception() { - // Entry point in previous activation (i.e., if the caller was - // interpreted) - Interpreter::_rethrow_exception_entry = __ pc(); - // Restore sp to interpreter_frame_last_sp even though we are going - // to empty the expression stack for the exception processing. - __ str(zr, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize)); - // r0: exception - // r3: return address/pc that threw exception - __ restore_bcp(); // rbcp points to call/send - __ restore_locals(); - __ restore_constant_pool_cache(); - __ reinit_heapbase(); // restore rheapbase as heapbase. - __ get_dispatch(); - -#ifndef PRODUCT - // tell the simulator that the caller method has been reentered - if (NotifySimulator) { - __ get_method(rmethod); - __ notify(Assembler::method_reentry); - } -#endif - // Entry point for exceptions thrown within interpreter code - Interpreter::_throw_exception_entry = __ pc(); - // If we came here via a NullPointerException on the receiver of a - // method, rmethod may be corrupt. - __ get_method(rmethod); - // expression stack is undefined here - // r0: exception - // rbcp: exception bcp - __ verify_oop(r0); - __ mov(c_rarg1, r0); - - // expression stack must be empty before entering the VM in case of - // an exception - __ empty_expression_stack(); - // find exception handler address and preserve exception oop - __ call_VM(r3, - CAST_FROM_FN_PTR(address, - InterpreterRuntime::exception_handler_for_exception), - c_rarg1); - - // Calculate stack limit - __ ldr(rscratch1, Address(rmethod, Method::const_offset())); - __ ldrh(rscratch1, Address(rscratch1, ConstMethod::max_stack_offset())); - __ add(rscratch1, rscratch1, frame::interpreter_frame_monitor_size() + 4); - __ ldr(rscratch2, - Address(rfp, frame::interpreter_frame_initial_sp_offset * wordSize)); - __ sub(rscratch1, rscratch2, rscratch1, ext::uxtx, 3); - __ andr(sp, rscratch1, -16); - - // r0: exception handler entry point - // r3: preserved exception oop - // rbcp: bcp for exception handler - __ push_ptr(r3); // push exception which is now the only value on the stack - __ br(r0); // jump to exception handler (may be _remove_activation_entry!) - - // If the exception is not handled in the current frame the frame is - // removed and the exception is rethrown (i.e. exception - // continuation is _rethrow_exception). - // - // Note: At this point the bci is still the bxi for the instruction - // which caused the exception and the expression stack is - // empty. Thus, for any VM calls at this point, GC will find a legal - // oop map (with empty expression stack). - - // - // JVMTI PopFrame support - // - - Interpreter::_remove_activation_preserving_args_entry = __ pc(); - __ empty_expression_stack(); - // Set the popframe_processing bit in pending_popframe_condition - // indicating that we are currently handling popframe, so that - // call_VMs that may happen later do not trigger new popframe - // handling cycles. - __ ldrw(r3, Address(rthread, JavaThread::popframe_condition_offset())); - __ orr(r3, r3, JavaThread::popframe_processing_bit); - __ strw(r3, Address(rthread, JavaThread::popframe_condition_offset())); - - { - // Check to see whether we are returning to a deoptimized frame. - // (The PopFrame call ensures that the caller of the popped frame is - // either interpreted or compiled and deoptimizes it if compiled.) - // In this case, we can't call dispatch_next() after the frame is - // popped, but instead must save the incoming arguments and restore - // them after deoptimization has occurred. - // - // Note that we don't compare the return PC against the - // deoptimization blob's unpack entry because of the presence of - // adapter frames in C2. - Label caller_not_deoptimized; - __ ldr(c_rarg1, Address(rfp, frame::return_addr_offset * wordSize)); - __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, - InterpreterRuntime::interpreter_contains), c_rarg1); - __ cbnz(r0, caller_not_deoptimized); - - // Compute size of arguments for saving when returning to - // deoptimized caller - __ get_method(r0); - __ ldr(r0, Address(r0, Method::const_offset())); - __ load_unsigned_short(r0, Address(r0, in_bytes(ConstMethod:: - size_of_parameters_offset()))); - __ lsl(r0, r0, Interpreter::logStackElementSize); - __ restore_locals(); // XXX do we need this? - __ sub(rlocals, rlocals, r0); - __ add(rlocals, rlocals, wordSize); - // Save these arguments - __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, - Deoptimization:: - popframe_preserve_args), - rthread, r0, rlocals); - - __ remove_activation(vtos, - /* throw_monitor_exception */ false, - /* install_monitor_exception */ false, - /* notify_jvmdi */ false); - - // Inform deoptimization that it is responsible for restoring - // these arguments - __ mov(rscratch1, JavaThread::popframe_force_deopt_reexecution_bit); - __ strw(rscratch1, Address(rthread, JavaThread::popframe_condition_offset())); - - // Continue in deoptimization handler - __ ret(lr); - - __ bind(caller_not_deoptimized); - } - - __ remove_activation(vtos, - /* throw_monitor_exception */ false, - /* install_monitor_exception */ false, - /* notify_jvmdi */ false); - - // Restore the last_sp and null it out - __ ldr(esp, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize)); - __ str(zr, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize)); - - __ restore_bcp(); - __ restore_locals(); - __ restore_constant_pool_cache(); - __ get_method(rmethod); - - // The method data pointer was incremented already during - // call profiling. We have to restore the mdp for the current bcp. - if (ProfileInterpreter) { - __ set_method_data_pointer_for_bcp(); - } - - // Clear the popframe condition flag - __ strw(zr, Address(rthread, JavaThread::popframe_condition_offset())); - assert(JavaThread::popframe_inactive == 0, "fix popframe_inactive"); - -#if INCLUDE_JVMTI - { - Label L_done; - - __ ldrb(rscratch1, Address(rbcp, 0)); - __ cmpw(r1, Bytecodes::_invokestatic); - __ br(Assembler::EQ, L_done); - - // The member name argument must be restored if _invokestatic is re-executed after a PopFrame call. - // Detect such a case in the InterpreterRuntime function and return the member name argument, or NULL. - - __ ldr(c_rarg0, Address(rlocals, 0)); - __ call_VM(r0, CAST_FROM_FN_PTR(address, InterpreterRuntime::member_name_arg_or_null), c_rarg0, rmethod, rbcp); - - __ cbz(r0, L_done); - - __ str(r0, Address(esp, 0)); - __ bind(L_done); - } -#endif // INCLUDE_JVMTI - - // Restore machine SP - __ ldr(rscratch1, Address(rmethod, Method::const_offset())); - __ ldrh(rscratch1, Address(rscratch1, ConstMethod::max_stack_offset())); - __ add(rscratch1, rscratch1, frame::interpreter_frame_monitor_size() + 4); - __ ldr(rscratch2, - Address(rfp, frame::interpreter_frame_initial_sp_offset * wordSize)); - __ sub(rscratch1, rscratch2, rscratch1, ext::uxtw, 3); - __ andr(sp, rscratch1, -16); - - __ dispatch_next(vtos); - // end of PopFrame support - - Interpreter::_remove_activation_entry = __ pc(); - - // preserve exception over this code sequence - __ pop_ptr(r0); - __ str(r0, Address(rthread, JavaThread::vm_result_offset())); - // remove the activation (without doing throws on illegalMonitorExceptions) - __ remove_activation(vtos, false, true, false); - // restore exception - // restore exception - __ get_vm_result(r0, rthread); - - // In between activations - previous activation type unknown yet - // compute continuation point - the continuation point expects the - // following registers set up: - // - // r0: exception - // lr: return address/pc that threw exception - // rsp: expression stack of caller - // rfp: fp of caller - // FIXME: There's no point saving LR here because VM calls don't trash it - __ stp(r0, lr, Address(__ pre(sp, -2 * wordSize))); // save exception & return address - __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, - SharedRuntime::exception_handler_for_return_address), - rthread, lr); - __ mov(r1, r0); // save exception handler - __ ldp(r0, lr, Address(__ post(sp, 2 * wordSize))); // restore exception & return address - // We might be returning to a deopt handler that expects r3 to - // contain the exception pc - __ mov(r3, lr); - // Note that an "issuing PC" is actually the next PC after the call - __ br(r1); // jump to exception - // handler of caller -} - - -// -// JVMTI ForceEarlyReturn support -// -address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) { - address entry = __ pc(); - - __ restore_bcp(); - __ restore_locals(); - __ empty_expression_stack(); - __ load_earlyret_value(state); - - __ ldr(rscratch1, Address(rthread, JavaThread::jvmti_thread_state_offset())); - Address cond_addr(rscratch1, JvmtiThreadState::earlyret_state_offset()); - - // Clear the earlyret state - assert(JvmtiThreadState::earlyret_inactive == 0, "should be"); - __ str(zr, cond_addr); - - __ remove_activation(state, - false, /* throw_monitor_exception */ - false, /* install_monitor_exception */ - true); /* notify_jvmdi */ - __ ret(lr); - - return entry; -} // end of ForceEarlyReturn support - - - -//----------------------------------------------------------------------------- -// Helper for vtos entry point generation - -void TemplateInterpreterGenerator::set_vtos_entry_points(Template* t, - address& bep, - address& cep, - address& sep, - address& aep, - address& iep, - address& lep, - address& fep, - address& dep, - address& vep) { - assert(t->is_valid() && t->tos_in() == vtos, "illegal template"); - Label L; - aep = __ pc(); __ push_ptr(); __ b(L); - fep = __ pc(); __ push_f(); __ b(L); - dep = __ pc(); __ push_d(); __ b(L); - lep = __ pc(); __ push_l(); __ b(L); - bep = cep = sep = - iep = __ pc(); __ push_i(); - vep = __ pc(); - __ bind(L); - generate_and_dispatch(t); -} - -//----------------------------------------------------------------------------- -// Generation of individual instructions - -// helpers for generate_and_dispatch - - -InterpreterGenerator::InterpreterGenerator(StubQueue* code) - : TemplateInterpreterGenerator(code) { - generate_all(); // down here so it can be "virtual" -} - -//----------------------------------------------------------------------------- - -// Non-product code -#ifndef PRODUCT -address TemplateInterpreterGenerator::generate_trace_code(TosState state) { - address entry = __ pc(); - - __ push(lr); - __ push(state); - __ push(RegSet::range(r0, r15), sp); - __ mov(c_rarg2, r0); // Pass itos - __ call_VM(noreg, - CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), - c_rarg1, c_rarg2, c_rarg3); - __ pop(RegSet::range(r0, r15), sp); - __ pop(state); - __ pop(lr); - __ ret(lr); // return from result handler - - return entry; -} - -void TemplateInterpreterGenerator::count_bytecode() { - Register rscratch3 = r0; - __ push(rscratch1); - __ push(rscratch2); - __ push(rscratch3); - Label L; - __ mov(rscratch2, (address) &BytecodeCounter::_counter_value); - __ bind(L); - __ ldxr(rscratch1, rscratch2); - __ add(rscratch1, rscratch1, 1); - __ stxr(rscratch3, rscratch1, rscratch2); - __ cbnzw(rscratch3, L); - __ pop(rscratch3); - __ pop(rscratch2); - __ pop(rscratch1); -} - -void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { ; } - -void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { ; } - - -void TemplateInterpreterGenerator::trace_bytecode(Template* t) { - // Call a little run-time stub to avoid blow-up for each bytecode. - // The run-time runtime saves the right registers, depending on - // the tosca in-state for the given template. - - assert(Interpreter::trace_code(t->tos_in()) != NULL, - "entry must have been generated"); - __ bl(Interpreter::trace_code(t->tos_in())); - __ reinit_heapbase(); -} - - -void TemplateInterpreterGenerator::stop_interpreter_at() { - Label L; - __ push(rscratch1); - __ mov(rscratch1, (address) &BytecodeCounter::_counter_value); - __ ldr(rscratch1, Address(rscratch1)); - __ mov(rscratch2, StopInterpreterAt); - __ cmpw(rscratch1, rscratch2); - __ br(Assembler::NE, L); - __ brk(0); - __ bind(L); - __ pop(rscratch1); -} - -#ifdef BUILTIN_SIM - -#include -#include - -extern "C" { - static int PAGESIZE = getpagesize(); - int is_mapped_address(u_int64_t address) - { - address = (address & ~((u_int64_t)PAGESIZE - 1)); - if (msync((void *)address, PAGESIZE, MS_ASYNC) == 0) { - return true; - } - if (errno != ENOMEM) { - return true; - } - return false; - } - - void bccheck1(u_int64_t pc, u_int64_t fp, char *method, int *bcidx, int *framesize, char *decode) - { - if (method != 0) { - method[0] = '\0'; - } - if (bcidx != 0) { - *bcidx = -2; - } - if (decode != 0) { - decode[0] = 0; - } - - if (framesize != 0) { - *framesize = -1; - } - - if (Interpreter::contains((address)pc)) { - AArch64Simulator *sim = AArch64Simulator::get_current(UseSimulatorCache, DisableBCCheck); - Method* meth; - address bcp; - if (fp) { -#define FRAME_SLOT_METHOD 3 -#define FRAME_SLOT_BCP 7 - meth = (Method*)sim->getMemory()->loadU64(fp - (FRAME_SLOT_METHOD << 3)); - bcp = (address)sim->getMemory()->loadU64(fp - (FRAME_SLOT_BCP << 3)); -#undef FRAME_SLOT_METHOD -#undef FRAME_SLOT_BCP - } else { - meth = (Method*)sim->getCPUState().xreg(RMETHOD, 0); - bcp = (address)sim->getCPUState().xreg(RBCP, 0); - } - if (meth->is_native()) { - return; - } - if(method && meth->is_method()) { - ResourceMark rm; - method[0] = 'I'; - method[1] = ' '; - meth->name_and_sig_as_C_string(method + 2, 398); - } - if (bcidx) { - if (meth->contains(bcp)) { - *bcidx = meth->bci_from(bcp); - } else { - *bcidx = -2; - } - } - if (decode) { - if (!BytecodeTracer::closure()) { - BytecodeTracer::set_closure(BytecodeTracer::std_closure()); - } - stringStream str(decode, 400); - BytecodeTracer::trace(meth, bcp, &str); - } - } else { - if (method) { - CodeBlob *cb = CodeCache::find_blob((address)pc); - if (cb != NULL) { - if (cb->is_nmethod()) { - ResourceMark rm; - nmethod* nm = (nmethod*)cb; - method[0] = 'C'; - method[1] = ' '; - nm->method()->name_and_sig_as_C_string(method + 2, 398); - } else if (cb->is_adapter_blob()) { - strcpy(method, "B adapter blob"); - } else if (cb->is_runtime_stub()) { - strcpy(method, "B runtime stub"); - } else if (cb->is_exception_stub()) { - strcpy(method, "B exception stub"); - } else if (cb->is_deoptimization_stub()) { - strcpy(method, "B deoptimization stub"); - } else if (cb->is_safepoint_stub()) { - strcpy(method, "B safepoint stub"); - } else if (cb->is_uncommon_trap_stub()) { - strcpy(method, "B uncommon trap stub"); - } else if (cb->contains((address)StubRoutines::call_stub())) { - strcpy(method, "B call stub"); - } else { - strcpy(method, "B unknown blob : "); - strcat(method, cb->name()); - } - if (framesize != NULL) { - *framesize = cb->frame_size(); - } - } - } - } - } - - - JNIEXPORT void bccheck(u_int64_t pc, u_int64_t fp, char *method, int *bcidx, int *framesize, char *decode) - { - bccheck1(pc, fp, method, bcidx, framesize, decode); - } -} - -#endif // BUILTIN_SIM -#endif // !PRODUCT -#endif // ! CC_INTERP